LIGHTROOM - Please replace a really useful shortcut (control-shift-m)

I'd much appreciate an email shortcut in LR6 that works as simply as the lost "ctr+shift+m" of earlier versions. It now takes 3 clicks to get the email window to open in Windows, where it used to take just one. Please find a new shortcut. Many of us email frequently, and the new arrangement is a nuisance. I'm sure you can find a way to do this. Thanks.